CN116908582A - Method and instrument for testing on-state - Google Patents
Method and instrument for testing on-state Download PDFInfo
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- CN116908582A CN116908582A CN202310807232.7A CN202310807232A CN116908582A CN 116908582 A CN116908582 A CN 116908582A CN 202310807232 A CN202310807232 A CN 202310807232A CN 116908582 A CN116908582 A CN 116908582A
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- 238000012360 testing method Methods 0.000 title claims abstract description 97
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims description 5
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 7
- 230000001276 controlling effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012806 monitoring device Methods 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013142 basic testing Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0084—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring voltage only
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- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The utility model relates to a method and a tester for testing an on-state, and belongs to the field of relay protection testing. The scheme of the utility model comprises the steps of continuously changing the voltage of an input signal of a tested device, detecting a corresponding displacement signal of the tested device, comparing the voltage of the input signal at the moment of displacement when the displacement signal is read, and if the voltage of the input signal is in a correct range, normally working the tested device. The scheme of the utility model is used for solving the problem that in the prior art, when the tested relay protection device is started to shift, the tester cannot accurately judge whether the starting voltage at the shifting moment is in a correct range.
Description
Technical Field
The utility model relates to a method and a tester for testing an on-state, and belongs to the field of relay protection testing.
Background
The microcomputer relay protection device is usually provided with an opening port, the opening port is connected with an opening plug-in unit, the opening plug-in unit belongs to a component part of an opening loop, whether the opening amount of the microcomputer relay protection device is effective or not is closely related to the functional reliability of the relay protection device, and the microcomputer relay protection device can perform subsequent protection actions only when the opening amount of the relay protection device is input into the opening port of the relay protection device. And whether the opening plug-in of the microcomputer relay protection device normally directly influences the action condition of the protection outlet, so that the opening check is required before the relay protection device is put into operation to determine whether the opening plug-in can normally work. In the research and development test stage, the relevant test (i.e. whether the starting is effective) of the microcomputer relay protection device is also the most basic test item and belongs to the basic assurance test item.
At present, most microcomputer relay protection devices have more opening quantity, for example, a transformer is protected with 32 paths of opening quantity, 220V voltages are used in the opening loops, and therefore operators are quite likely to touch the lead by mistake due to operation non-standardization, and safety accidents occur. The prior art realizes the comprehensive inspection of entering, a plurality of testers are required to complete in a matched manner, the time is more, and the testers are required to operate frequently in a live mode when the entering effectiveness is tested, so that the comprehensive inspection is complicated and unsafe. In addition, in the backup protection logic test of multi-section multi-time-limit configuration, when the simultaneous test is carried out on the open-in of more protection effectively, the validity of each open-in path is difficult to accurately judge, and a tester is required to carry out electrified inspection, so that the operation complexity is increased.
The patent document of the utility model with the publication number of CN209878901U discloses an opening tester suitable for testing a microcomputer relay protection device. According to the scheme, the indicator lamp is connected in series with the open power supply loop, so long as the input side is electrified, the open power supply loop is closed, the open power supply loop is conducted, at the moment, if the deflection signal of the relay protection device to be detected is detected, the relay protection device to be detected is considered to be normal, and the indicator lamp cannot accurately indicate whether the relay protection device generates the deflection signal under the proper voltage of the open power supply loop. In the related standards of the relay protection device, one standard requirement is that when the action voltage is within 55% -70% of the rated direct-current power supply voltage, the opening state tester disclosed by the scheme can simply judge whether the relay protection device acts under the opening signal or not, and can not judge whether the relay protection device acts under the standard voltage or not.
Disclosure of Invention
The utility model aims to provide a test method and a tester for an open state, which are used for solving the problem that in the prior art, when a relay protection device to be tested is open and displaced, the tester cannot accurately judge whether the open voltage at the moment of displacement is in a correct range.
In order to achieve the above object, the present utility model provides a method comprising:
a method for testing the start-in state includes continuously changing the voltage of the start-in signal of the input device to be tested, detecting the corresponding position-changing signal of the device to be tested, comparing the voltage of the start-in signal at the position-changing time when the position-changing signal is read, and if the voltage of the start-in signal is in the correct range, the device to be tested works normally.
The device to be tested is controlled to work in the range of the action voltage by continuously changing the voltage of the opening signal of the device to be tested, when the deflection information of the device to be tested is detected, for example, the device to be tested is subjected to deflection of closing operation, at the moment, the controller of the test device compares the voltage of the opening signal at the moment of deflection, if the voltage of the opening signal is in the correct range, the device to be tested is determined to work normally, otherwise, faults possibly occur, whether the action voltage of the device to be tested meets the requirement of the action voltage can be comprehensively tested by dynamically changing the voltage of the opening signal, and the test result of the test device can be more accurate by comparing whether the voltage of the opening signal at the moment of deflection is in the correct range.
Further, the device comprises a manual test mode, wherein the manual test mode controls the on-off of each test output signal through a manual control signal, and each test output signal is used for inputting an input port of a tested device and inputting an input signal to the input port.
The manual test mode is used for controlling the on-off of each test output signal to test the tested device in a manual mode, the manual test mode is more suitable for the condition that the tested device is less, and the manual test mode is more convenient.
Further, the automatic test mode is characterized by comprising an automatic test mode, wherein the automatic test mode controls the on-off of each test output signal through automatic control signal polling, and each test output signal is used for inputting an on-off port of a tested device and an on-off signal to the on-off port.
The automatic test mode is to control the on-off of each test output signal to test the tested device by the controller polling the on-off of the control channel, and when the tested devices are more and the required test circuits are more, the automatic test mode is more convenient and concise.
The utility model provides a state of turning on tester, includes signal generation module and controller, signal generation module is used for producing and continuous change input device under test's voltage of turning on the signal, the controller is used for detecting the corresponding signal that shifts of device under test, when reading the signal that shifts, the voltage of the signal that turns on the moment of shifting, if the voltage of the signal that turns on is in the correct scope, the device under test normally works.
Further, the signal generating module comprises an adjustable direct current power supply, optical couplers and a switch module, wherein the adjustable direct current voltage power supply is connected with each test signal output end in a one-to-one correspondence manner through the on-off ends of the optical couplers, and each test signal output end is used for being connected with one opening-in port of a tested device and inputting an opening-in signal to the opening-in port; the switch module comprises one-to-one corresponding on-off switches which are connected with the light emitting ends of the optocouplers in series to form a loop, and the switch module controls the on-off of the adjustable direct current power supply to the on-off signal output end through the optocouplers to provide a voltage variable on-off signal for the tested device.
Further, the signal generating module comprises a manual test mode, and the manual test mode controls the loop on which the luminous end is positioned to be conducted through the manual switches which are arranged on the panel and are connected with the conducting switches in one-to-one parallel.
Further, the signal generating module further comprises an automatic test mode, wherein the automatic test mode outputs a polling automatic control signal to the switch module through the controller, and the loop where the on-off control light emitting end of the on-switch is located is sequentially controlled to be conducted.
Further, the power supply system also comprises a rectifying module, wherein the direct current side of the rectifying module is connected with the signal generating module to supply power for the signal generating module.
Further, the on switch is a relay, a normally open contact of the relay is connected with a light emitting end of the optocoupler in series to form a loop, and a coil of the relay is electrified under the control of the controller.
Further, the panel is further provided with LED lamps at positions corresponding to the manual switches one by one, and the LED lamps are used for indicating whether the working condition of the corresponding opening port of the tested device is normal or not.
Drawings
FIG. 1 is a schematic diagram of an open state tester of the present utility model;
FIG. 2 is a top view of a terminal and faceplate of the open-state tester of the present utility model;
FIG. 3 is a right side view of the terminals and faceplate of the open state tester of the present utility model;
FIG. 4 is a schematic diagram of the wiring of the open state tester of the present utility model.
In the figure: 401: a housing; 402: a direct current power plug; 403: an ac power plug; 404: an Ethernet interface; 405: a control end is opened; 406: a touch screen; 407: a main switch; 408: direct current power supply indicator lamp; 409: a device power indicator; 410: an LED lamp; 411: automatically controlling the indicator lamp; 412: an automatic control switch; 413: and a manual control switch.
Detailed Description
The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
An embodiment of an on-state tester:
the open state tester (hereinafter referred to as tester) suitable for testing the microcomputer relay protection device according to this embodiment is shown in fig. 1, and includes n test circuits, where n is 32 in this embodiment, each test circuit includes two test modes, each test mode includes at least one test loop, each test circuit includes a power supply loop, an optocoupler, a controller and an LED lamp 410, an anode end of an output side of each optocoupler is used for connecting an adjustable dc power supply, and a cathode end of an output side of the optocoupler is used for providing a voltage of an open signal for the relay protection device to be tested. The manual test controls the on-off of the input side of each loop optocoupler to provide the voltage of the on-off signal for the relay protection device to be tested through the manual control switch 413 which is serially arranged in the power supply loop, the automatic control switch 412 is closed during the automatic test, the on-off of the on-off signal for the relay protection device to be tested is controlled through the on-off of the normally open contact of the relay which is serially arranged in the power supply loop and connected with the manual control switch 413 in parallel through the controller polling control of the on-off state tester, the on-off state tester reads the on-off state deflection condition of the relay protection device to be tested through the Ethernet interface 404 in fig. 2, the on-off state tester indicates on the touch screen 406, and the on-off deflection condition of the relay protection device to be tested is indicated through the LED lamp 410 on the driving panel. In other embodiments, the number of test circuits is not limited, but one test circuit is guaranteed to be connected with the insert connected to one insert port in the relay protection device to be tested, that is, the number of test circuits is greater than or equal to the number of inserts in the relay protection device to be tested.
The tester shown in fig. 1 further comprises a rectifying module AC/DC, the AC side of the AC/DC is connected with a power supply loop, the AC/DC converts the AC of the AC power supply into DC, the DC side of the AC/DC supplies power for switching on the DC (here, 5V DC) required by the power supply loop inside the monitoring device, so that the optocoupler can normally start up, the touch screen and the controller.
In this embodiment, as shown in fig. 2, a power supply loop, an optocoupler, an LED lamp 410, an AC/DC and a controller in 32 test circuits are all disposed on a PCB board for connection, and in order to ensure the safety of the test, the tester further includes, as shown in fig. 2 and 3, a housing 401, a DC power plug 402, an AC power plug 403, an ethernet interface 404, an on-control end 405 (i.e., a signal output interface), and a touch screen 406, where the PCB board is packaged in the housing 401, the touch screen 406 is connected with the controller through a flat cable, the AC power plug 403 is connected with the AC side of the AC/DC, the DC power plug 402 is connected with the DC source, and the signal output ends of the test circuits are connected with the on-control end 405 through signal lines. As shown in fig. 2, the housing 401 includes 2U-shaped steel plates and PCB boards and is fixed with bolts and nuts. For convenient operation and more visual inspection, the 32 manual control switches 413, the 32 LED lamps 410 and the touch screen 406 are arranged on the main panel, each LED lamp 410 and each manual control switch 413 are coded and named and correspond to the opening port in the relay protection device to be tested, the opening control end 405 is composed of 32 scattered wires, as shown in fig. 4, the 32 wires are connected with the terminals of the opening control end 405 after the number plate is connected in series on each wire, the numbers (such as 1, 2, … and 32) on the number plate are in one-to-one correspondence with the codes (such as 1, 2, … and 32) of the LED lamps and the manual control switches 413, the opening plug-in connected with the opening port in the relay protection device to be tested can be quickly identified through the codes corresponding to the manual control switches 413 on the control panel, if the automatic control switches 412 are opened, the corresponding automatic control indicator lamps 411 are also lightened, the controller of the tester controls the on-off of the optical coupling input side of all loops to provide the voltage of the opening signals for the relay protection device to be tested, and the relay protection device to be tested.
In order to control the working state of the tester, as shown in fig. 2, a main switch 407 is further arranged on the housing 401 to control the power on-off of the tester, and a device power indicator 409 is provided to indicate the working state of the tester, the on-state represents the tester to enter the working state, the off-state represents the tester to be powered off, and a direct current power indicator 408 is provided to indicate the on-off state of the direct current power, and an automatic test indicator 411 is provided to turn on the test stand to enter an automatic test mode.
Firstly, a 220V alternating current power plug 403 is connected to an alternating current power supply, DC+ and DC-of a direct current power plug 402 are respectively connected to a positive pole and a negative pole of a direct current power supply of a monitoring device open loop, a direct current power supply indicator lamp 408 is turned on, a main switch 407 is turned on, a device power supply indicator lamp 409 is turned on, so that a tester is in a working state, at the moment, 220V alternating current is converted into 5V direct current through AC/DC, the voltage of a power supply loop is 5V, then a control switch (a manual or automatic test mode is selected according to requirements) is used for selecting and controlling a test circuit, and a plurality of test circuits can be selected to work together at the same time. When the automatic control switch 412 is turned off, a manual test mode is selected at this time, the power supply loop comprises a 5V dc series manual control switch 413 and a current limiting resistor, the power supply loop is used as an input side circuit of the optocoupler, and the manual control switch 413 is manually turned on to control the on-off of the input side of the optocoupler of the corresponding loop to provide the voltage of the on-off signal for the relay protection device to be tested; when the automatic control switch 412 is turned on, an automatic test mode is selected at this time, the power supply loop comprises a normally open contact and a current limiting resistor of a 5V direct current series relay, the power supply loop is used as an input side circuit of an optocoupler, a coil of the relay is powered on under the control of a controller, and the controller of the tester polls and controls the on-off of the normally open contact of the relay serially arranged in the power supply loop to control the on-off of the input side of the optocoupler of the corresponding loop to provide the voltage of an on-off signal for the relay protection device to be tested; the direct current voltage of the switching-in signal of the relay protection device to be tested is adjusted according to the test requirement, when the voltage reaches the action voltage of the switching-in loop, the communication module of the relay protection device to be tested receives the signal of the switching-in loop deflection, and transmits the deflection information to the controller of the switching-in state tester through Ethernet communication, the controller compares the range of the direct current input power supply, if the range of the direct current input power supply is within the working power supply range of the switching-in loop, the LED lamp 410 of the corresponding loop is driven to be lightened, meanwhile, the input value of the switching-in power supply is displayed on the touch screen 406, the corresponding LED lamp 410 is lightened, namely the switching-in quantity is input into the switching-in port corresponding to the relay protection device to be tested, the switching-in plug-in corresponding to the switching-in port is indicated to work normally, and if the corresponding LED lamp 410 is not lightened, the switching-in plug-in fault corresponding to the relay protection device to be tested, which is connected with the test circuit is indicated.
The touch screen 406 display includes adjustable dc source real-time voltage, on signal status, received device under test detection status, detection result indication, manual/automatic test mode indication, pass voltage threshold indication, and print test results; the control contents achievable through the touch screen include control of manual/automatic test mode and automatic start control.
The tester has the advantages of convenient wiring, simple structure, small volume, wide application range, high testing efficiency, safe and convenient detection, and the like, and is suitable for controlling and monitoring the input of various microcomputer relay protection device research and development process tests. By using the tester for testing, a tester can complete the testing process in only 10 minutes, and the testing is safe and reliable.
An embodiment of a method for testing an on state:
the method for testing the open state can be applied to the open state tester shown in the figure 1, and the method has the overall idea that the voltage of an open signal on the open state tester is regulated according to the test requirement, the tested relay protection device transmits the deflection information of the open state tester to a controller of the open state tester, and the controller compares the voltage range of the open signal with the deflection information of the corresponding tested relay protection device, if the switch is in the working voltage range of the tested relay protection device and the deflection is correct, the normal operation of the plug-in on the tested relay protection device is indicated, otherwise, the plug-in on the tested relay protection device is indicated to be faulty. The specific implementation process of the method is described in detail in the embodiment of the on-state tester, and the description of this embodiment is omitted.
Claims (10)
1. A method for testing the start-in state of a tested device is characterized by continuously changing the voltage of a start-in signal of the input tested device, detecting the corresponding deflection signal of the tested device, comparing the voltage of the start-in signal at the deflection moment when the deflection signal is read, and if the voltage of the start-in signal is in a correct range, the tested device works normally.
2. The method of claim 1, comprising a manual test mode that controls the on-off of the respective test output signals by manual control signals, each test output signal being for input to an on-off port of the device under test and for input of on-off signals thereto.
3. The method of claim 1, comprising an automatic test mode that polls for control of the on-off of individual test output signals by an automatic control signal, each test output signal being for input to an on-port of the device under test and for input of on-signal thereto.
4. The open state tester is characterized by comprising a signal generation module and a controller, wherein the signal generation module is used for generating and continuously changing the voltage of an open signal input into a tested device, the controller is used for detecting a corresponding deflection signal of the tested device, when the deflection signal is read, the voltage of the open signal at the deflection moment is compared, and if the voltage of the open signal is in a correct range, the tested device normally works.
5. The on-off state tester according to claim 4, wherein the signal generating module comprises an adjustable direct current power supply, an optical coupler and a switch module, the adjustable direct current voltage source is connected with each test signal output end through on-off ends of a plurality of optical couplers in a one-to-one correspondence manner, and each test signal output end is used for being connected with one on-off port of a tested device and inputting on-off signals to the tested device; the switch module comprises one-to-one corresponding on-off switches which are connected with the light emitting ends of the optocouplers in series to form a loop, and the switch module controls the on-off of the adjustable direct current power supply to the on-off signal output end through the optocouplers to provide a voltage variable on-off signal for the tested device.
6. The on-state tester according to claim 5, wherein the signal generating module comprises a manual test mode, and the manual test mode controls the loop on which the light emitting end is located to be conducted through a manual switch arranged on the panel and connected with the conducting switch in one-to-one parallel.
7. The on-state tester according to claim 5, wherein the signal generating module further comprises an automatic test mode, and the automatic test mode outputs a polling automatic control signal to the switch module through the controller, and sequentially controls the on-off of the on-switch to control the loop on which the light emitting end is located to be turned on.
8. The on-state tester according to claim 4, further comprising a rectifying module, wherein a direct current side of the rectifying module is connected to the signal generating module to supply power to the signal generating module.
9. The on-state tester according to any one of claims 5 to 7, wherein the on-switch is a relay, a normally open contact of the relay and a light emitting end of the optocoupler are connected in series to form a loop, and a coil of the relay is powered under the control of a controller.
10. The open state tester of claim 6, wherein the panel is further provided with LED lamps at positions corresponding to the manual switches one by one, and the LED lamps are used for indicating whether the working condition of the device under test corresponding to the open port is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310807232.7A CN116908582A (en) | 2023-06-30 | 2023-06-30 | Method and instrument for testing on-state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310807232.7A CN116908582A (en) | 2023-06-30 | 2023-06-30 | Method and instrument for testing on-state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116908582A true CN116908582A (en) | 2023-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310807232.7A Pending CN116908582A (en) | 2023-06-30 | 2023-06-30 | Method and instrument for testing on-state |
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| Country | Link |
|---|---|
| CN (1) | CN116908582A (en) |
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2023
- 2023-06-30 CN CN202310807232.7A patent/CN116908582A/en active Pending
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